Patent · US Active

Transcoding method and device

US8270470B2 · kind B2 · utility

1Cited by

4References

21Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Peter Amon · Birkenfeld, DE
Jürgen Pandel · Feldkirchen-Westerham, DE

Key dates

Filing date	Nov 9, 2005
Grant date	Sep 18, 2012
Priority date	—
Expiry date	Dec 4, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/70
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An encoded, digital video input signal having a base signal and at least one differential extension signal is transcoded by determining a first piece of page data and a first piece of transform coefficient data from the base signal; determining one respective second piece of page data and one respective piece of transform coefficient data from the base signal; and determining one respective second piece of page data and one respective piece of transform coefficient data from at least one differential extension signal. A third piece of page data is generated from the first and at least one second piece of page data, and a third piece of transform coefficient data is generated from the first and at least one second piece of transform coefficient data using a weighted addition. An encoded, digital video output signal is generated from the third pieces of page data and transform coefficient data.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.